[client] game room frames update

src/common/haxe/ru/m/tankz/config/Config.hx

@@ -233,7 +233,7 @@ class Config {
         return playersMap.get(playerId);
     }
 
-    public function getColor(playerId:PlayerId):Color {
+    public function getColor(playerId:PlayerId):Null<Color> {
         var player = getPlayer(playerId);
         if (player != null && player.color != null) {
             return player.color;
@@ -242,7 +242,7 @@ class Config {
         if (team != null) {
             return team.color;
         }
-        return -1;
+        return null;
     }
 
     public function getPoint(teamId:TeamId, type:String, index:Int = -1):SpawnPoint {